26 results on '"Reig-Viader, R."'
Search Results
2. Sublayer- and cell-type-specific neurodegenerative transcriptional trajectories in hippocampal sclerosis
- Author
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Ministerio de Ciencia e Innovación (España), Fundación Tatiana Pérez de Guzmán el Bueno, Human Frontier Science Program, Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Economía y Empresa (España), Fundación Alicia Koplowitz, Cid Ledesma, Elena, Marquez-Galera, Angel, Valero, Manuel, Gal, Beatriz, Medeiros, DanielC., Navarrón, Carmen M., Ballesteros-Esteban, Luis, Reig-Viader, R., Morales, Aixa V., Fernández-Lamo, Iván, Gómez-Domínguez, Daniel, Sato, Masaaki, Hayashi, Yasunori, Bayés, Àlex, Barco, Ángel, López-Atalaya, José P., Menéndez de la Prida, Liset, Ministerio de Ciencia e Innovación (España), Fundación Tatiana Pérez de Guzmán el Bueno, Human Frontier Science Program, Ministerio de Ciencia, Innovación y Universidades (España), Ministerio de Economía y Empresa (España), Fundación Alicia Koplowitz, Cid Ledesma, Elena, Marquez-Galera, Angel, Valero, Manuel, Gal, Beatriz, Medeiros, DanielC., Navarrón, Carmen M., Ballesteros-Esteban, Luis, Reig-Viader, R., Morales, Aixa V., Fernández-Lamo, Iván, Gómez-Domínguez, Daniel, Sato, Masaaki, Hayashi, Yasunori, Bayés, Àlex, Barco, Ángel, López-Atalaya, José P., and Menéndez de la Prida, Liset
- Abstract
Hippocampal sclerosis, the major neuropathological hallmark of temporal lobe epilepsy, is characterized by different patterns of neuronal loss. The mechanisms of cell-type-specific vulnerability and their progression and histopathological classification remain controversial. Using single-cell electrophysiology in vivo and immediate-early gene expression, we reveal that superficial CA1 pyramidal neurons are overactive in epileptic rodents. Bulk tissue and single-nucleus expression profiling disclose sublayer-specific transcriptomic signatures and robust microglial pro-inflammatory responses. Transcripts regulating neuronal processes such as voltage channels, synaptic signaling, and cell adhesion are deregulated differently by epilepsy across sublayers, whereas neurodegenerative signatures primarily involve superficial cells. Pseudotime analysis of gene expression in single nuclei and in situ validation reveal separated trajectories from health to epilepsy across cell types and identify a subset of superficial cells undergoing a later stage in neurodegeneration. Our findings indicate that sublayer- and cell-type-specific changes associated with selective CA1 neuronal damage contribute to progression of hippocampal sclerosis.
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- 2021
3. Gene expression is altered after bisphenol A exposure in human fetal oocytes in vitro
- Author
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Brieño-Enríquez, M.A., Reig-Viader, R., Cabero, L., Toran, N., Martínez, F., Roig, I., and Garcia Caldés, M.
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- 2012
- Full Text
- View/download PDF
4. Metazoan evolution of glutamate receptors reveals unreported phylogenetic groups and divergent lineage-specific events
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Ramos-Vicente, David, Ji, Jie, Gratacòs-Batlle, Esther, Gou Alsina, Gemma, Reig-Viader, R., Fernandez-Martín, josé Luis, Burguera, Demian, Navas-Pérez, Enrique, García-Fernández, Jordi, Fuentes-Prior, Pablo, Escrivà, Hector, Roher Armentia, Nerea, Soto, David, Bayés, Àlex, and Universitat Autònoma de Barcelona. Institut de Biotecnologia i de Biomedicina \\'Vicent Villar Palasí\\'
- Subjects
0301 basic medicine ,Nervous system ,metabotropic glutamate receptors ,QH301-705.5 ,Science ,Receptors de neurotransmissors ,Biology ,amphioxus ,General Biochemistry, Genetics and Molecular Biology ,Neurotransmitter receptors ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Biology (General) ,Receptor ,Ion channel ,Amphioxus ,General Immunology and Microbiology ,General Neuroscience ,Glutamate receptor ,General Medicine ,electrophysiology ,Metabotropic glutamate receptors ,ionotropic glutamate receptors ,phylogenetics ,Phylogenetics ,Electrophysiology ,030104 developmental biology ,medicine.anatomical_structure ,Metabotropic receptor ,Evolutionary biology ,Metabotropic glutamate receptor ,gene expression ,Medicine ,Neuron ,Ionotropic glutamate receptors ,Gene expression ,Other ,030217 neurology & neurosurgery ,Ionotropic effect - Abstract
Glutamate receptors are divided in two unrelated families: ionotropic (iGluR), driving synaptic transmission, and metabotropic (mGluR), which modulate synaptic strength. The present classification of GluRs is based on vertebrate proteins and has remained unchanged for over two decades. Here we report an exhaustive phylogenetic study of GluRs in metazoans. Importantly, we demonstrate that GluRs have followed different evolutionary histories in separated animal lineages. Our analysis reveals that the present organization of iGluRs into six classes does not capture the full complexity of their evolution. Instead, we propose an organization into four subfamilies and ten classes, four of which have never been previously described. Furthermore, we report a sister class to mGluR classes I-III, class IV. We show that many unreported proteins are expressed in the nervous system, and that new Epsilon receptors form functional ligand-gated ion channels. We propose an updated classification of glutamate receptors that includes our findings. Nerve cells or neurons communicate with each other by releasing specific molecules in the gap between them, the synapses. The sending neuron passes on messages through packets of chemicals called neurotransmitters, which are picked up by the receiving cell with the help of receptors on its surface. Neurons use different neurotransmitters to send different messages, but one of the most common ones is glutamate. There are two families of glutamate receptors: ionotropic receptors, which can open or close ion channels in response to neurotransmitters and control the transmission of a signal, and metabotropic receptors, which are linked to a specific protein and control the strength of signal. Our understanding of these two receptor families comes from animals with backbones, known as vertebrates. But the receptors themselves are ancient. We can trace the first family back as far as bacteria and the second back to single-celled organisms like amoebas. Vertebrates have six classes of ionotropic and three classes of metabotropic glutamate receptor. But other multi-celled animals also have these receptors, so this picture may not be complete. Here, Ramos-Vicente et al. mapped all major lineages of animals to reveal the evolutionary history of these receptors to find out if the receptor families became more complicated as brain power increased. The results showed that the glutamate receptors found in vertebrates are only a fraction of all the types that exist. In fact, before present-day animal groups emerged, the part of the genome that holds the ionotropic receptor genes duplicated three times. This formed four receptor subfamilies, and our ancestors had all of them. Across the animal kingdom, there are ten, not six, classes of ionotropic receptors and there is an extra class of metabotropic receptors. But only two subfamilies of ionotropic and three out of four metabotropic receptor classes are still present in vertebrates today. The current classification of glutamate receptors centers around vertebrates, ignoring other animals. But this new data could change that. A better knowledge of these new receptors could aid neuroscientists in better understanding the nervous system. And, using this technique to study other families of proteins could reveal more missing links in evolution.
- Published
- 2018
5. Synaptic proteomics as a means to identify the molecular basis of mental illness: Are we getting there?
- Author
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Reig-Viader, R, Sindreu, C, and Bayes, A
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Proteomics ,Meta-analysis ,Neurodevelopmental disorders ,Psychiatric disorders ,Synapse - Abstract
Synapses are centrally involved in many brain disorders, particularly in psychiatric and neurodevelopmental ones. However, our current understanding of the proteomic alterations affecting synaptic performance in the majority of mental illnesses is limited. As a result, novel pharmacotherapies with improved neurological efficacy have been scarce over the past decades. The main goal of synaptic proteomics in the context of mental illnesses is to identify dysregulated molecular mechanisms underlying these conditions. Here we reviewed and performed a meta-analysis of previous neuroproteomic research to identify proteins that may be consistently dysregulated in one or several mental disorders. Notably, we found very few proteins reproducibly altered among independent experiments for any given condition or between conditions, indicating that we are still far from identifying key pathophysiological mechanisms of mental illness. We suggest that future research in the field will require higher levels of standardization and larger-scale experiments to address the challenge posed by biological and methodological variability. We strongly believe that more resources should be placed in this field as the need to identify the molecular roots of mental illnesses is highly pressing.
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- 2018
6. Δ9-tetrahydrocannabinol modulates the proteasome system in the brain
- Author
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Salgado-Mendialdúa, V., primary, Aguirre-Plans, J., additional, Guney, E., additional, Reig-Viader, R., additional, Maldonado, R., additional, Bayés, À., additional, Oliva, B., additional, and Ozaita, A., additional
- Published
- 2018
- Full Text
- View/download PDF
7. Evolution of complexity in the zebrafish synapse proteome
- Author
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Bayés, À., Collins, M.O., Reig-Viader, R., Gou, G., Goulding, D., Izquierdo, A., Choudhary, J.S., Emes, R.D., and Grant, S.G.
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animal structures ,Science ,fungi ,embryonic structures - Abstract
The proteome of human brain synapses is highly complex and is mutated in over 130 diseases. This complexity arose from two whole-genome duplications early in the vertebrate lineage. Zebrafish are used in modelling human diseases; however, its synapse proteome is uncharacterized, and whether the teleost-specific genome duplication (TSGD) influenced complexity is unknown. We report the characterization of the proteomes and ultrastructure of central synapses in zebrafish and analyse the importance of the TSGD. While the TSGD increases overall synapse proteome complexity, the postsynaptic density (PSD) proteome of zebrafish has lower complexity than mammals. A highly conserved set of similar to 1,000 proteins is shared across vertebrates. PSD ultrastructural features are also conserved. Lineage-specific proteome differences indicate that vertebrate species evolved distinct synapse types and functions. The data sets are a resource for a wide range of studies and have important implications for the use of zebrafish in modelling human synaptic diseases.
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- 2017
8. Evolution of complexity in the zebrafish synapse proteome
- Author
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Bayés, Àlex, Collins, Mark O., Reig-Viader, R., Gou Alsina, Gemma, Goulding, David, Izquierdo, Abril, Choudhary, Jyoti S., Emes, Richard D., Grant, Seth G. N., and Universitat Autònoma de Barcelona
- Subjects
animal structures ,embryonic structures ,fungi - Abstract
The proteome of human brain synapses is highly complex and is mutated in over 130 diseases. This complexity arose from two whole-genome duplications early in the vertebrate lineage. Zebrafish are used in modelling human diseases; however, its synapse proteome is uncharacterized, and whether the teleost-specific genome duplication (TSGD) influenced complexity is unknown. We report the characterization of the proteomes and ultrastructure of central synapses in zebrafish and analyse the importance of the TSGD. While the TSGD increases overall synapse proteome complexity, the postsynaptic density (PSD) proteome of zebrafish has lower complexity than mammals. A highly conserved set of ∼1,000 proteins is shared across vertebrates. PSD ultrastructural features are also conserved. Lineage-specific proteome differences indicate that vertebrate species evolved distinct synapse types and functions. The data sets are a resource for a wide range of studies and have important implications for the use of zebrafish in modelling human synaptic diseases. Systematic analysis of the zebrafish synapse proteome has been lacking. Here the authors characterize the ultrastructure of zebrafish synapse and compare the proteomes of postsynaptic density in zebrafish and mice, offering a resource for future studies using zebrafish to model diseases.
- Published
- 2017
9. POSTER VIEWING SESSION - FEMALE (IN) FERTILITY
- Author
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Engman, M., primary, Bystrom, B., additional, Varghese, S., additional, Lalitkumar, P. G. L., additional, Gemzell-Danielsson, K., additional, Romeu, C., additional, Urries, A., additional, Lierta, M., additional, Sanchez Rubio, J., additional, Sanz, B., additional, Perez, I., additional, Casis, L., additional, Salerno, A., additional, Nazzaro, A., additional, Di Iorio, L., additional, Bonassisa, P., additional, Van Os, L., additional, Vink-Ranti, C. Q. J., additional, de Haan-Cramer, J. H., additional, Rijnders, P. M., additional, Jansen, C. A. M., additional, Marino, S., additional, Granato, C., additional, Pastore, E., additional, Brandes, M., additional, Hamilton, C. J. C. M., additional, de Bruin, J. P., additional, Bots, R. S. G. M., additional, Nelen, W. L. D. M., additional, Kremer, J. A. M., additional, Szkodziak, P., additional, Wozniak, S., additional, Czuczwar, P., additional, Paszkowski, T., additional, Agirregoitia, N., additional, Peralta, L., additional, Mendoza, R., additional, Exposito, A., additional, Matorras, R., additional, Agirregoitia, E., additional, Chuderland, D., additional, Ben-Ami, I., additional, Kaplan-Kraicer, R., additional, Grossman, H., additional, Satchi- Fainaro, R., additional, Eldar-Boock, A., additional, Ron-El, R., additional, Shalgi, R., additional, Custers, I. M., additional, Scholten, I., additional, Moolenaar, L. M., additional, Flierman, P. A., additional, Dessel, T. J. H. M., additional, Gerards, M. H., additional, Cox, T., additional, Janssen, C. A. H., additional, van der Veen, F., additional, Mol, B. W. J., additional, Wathlet, S., additional, Adriaenssens, T., additional, Verheyen, G., additional, Coucke, W., additional, Smitz, J., additional, Feliciani, E., additional, Ferraretti, A. P., additional, Paesano, C., additional, Pellizzaro, E., additional, Magli, M. C., additional, Gianaroli, L., additional, Hernandez, J., additional, Rodriguez-Fuentes, A., additional, Garcia-Guzman, R., additional, Palumbo, A., additional, Radunovic, N., additional, Tosic, T., additional, Djukic, S., additional, Lockwood, J. C., additional, Van Landuyt, L., additional, Karayalcin, R., additional, Ozcan, S. A. R. P., additional, Ozyer, S., additional, Gurlek, B., additional, Kale, I., additional, Moraloglu, O., additional, Batioglu, S., additional, Chaudhury, K., additional, Narendra Babu, K., additional, Mamata Joshi, V., additional, Srivastava, S., additional, Chakravarty, B. N., additional, Viardot-Foucault, V., additional, Prasath, E. B., additional, Tai, B. C., additional, Chan, J. K. Y., additional, Loh, S. F., additional, Cordeiro, I., additional, Leal, F., additional, Soares, A. P., additional, Nunes, J., additional, Sousa, S., additional, Aguiar, A., additional, Carvalho, M., additional, Calhaz-Jorge, C., additional, Karkanaki, A., additional, Piouk, A., additional, Katsikis, I., additional, Mousatat, T., additional, Koiou, E., additional, Daskalopoulos, G. N., additional, Panidis, D., additional, Tolikas, A., additional, Tsakos, E., additional, Gerou, S., additional, Prapas, Y., additional, Loufopoulos, A., additional, Abanto, E., additional, Barrenetxea, G., additional, Agirregoikoa, J., additional, Anarte, C., additional, De Pablo, J. L., additional, Burgos, J., additional, Komarovsky, D., additional, Friedler, S., additional, Gidoni, Y., additional, Ben-ami, I., additional, Strassburger, D., additional, Bern, O., additional, Kasterstein E, E., additional, Komsky, A., additional, Maslansky, B., additional, Raziel, A., additional, Fuentes, A., additional, Argandona, F., additional, Gabler, F., additional, Galleguillos, A., additional, Torres, A., additional, Palomino, W. A., additional, Gonzalez-Fernandez, R., additional, Pena, O., additional, Avila, J., additional, Talebi Chahvar, S., additional, Biondini, V., additional, Battistoni, S., additional, Giannubilo, S., additional, Tranquilli, A. L., additional, Stensen, M. H., additional, Tanbo, T., additional, Storeng, R., additional, Abyholm, T., additional, Fedorcsak, P., additional, Johnson, S. R., additional, Foster, L., additional, Ellis, J., additional, Choi, J. R., additional, Joo, J. K., additional, Son, J. B., additional, Lee, K. S., additional, Helmgaard, L., additional, Klein, B. M., additional, Arce, J. C., additional, Sanhueza, P., additional, Donoso, P., additional, Salinas, R., additional, Enriquez, R., additional, Saez, V., additional, Carrasco, I., additional, Rios, M., additional, Gonzalez, P., additional, Macklon, N., additional, Guo, M., additional, Richardson, M., additional, Wilson, P., additional, Chian, R. C., additional, Eapen, A., additional, Hrehorcak, M., additional, Campbell, S., additional, Nargund, G., additional, Oron, G., additional, Fisch, B., additional, Ao, A., additional, Freidman, O., additional, Zhang, X. Y., additional, Ben-Haroush, A., additional, Abir, R., additional, Hantisteanu, S., additional, Ellenbogen, A., additional, Hallak, M., additional, Michaeli, M., additional, Fainaru, O., additional, Maman, E., additional, Yong, G., additional, Kedem, A., additional, Yeruahlmi, G., additional, Konopnicki, S., additional, Cohen, B., additional, Dor, J., additional, Hourvitz, A., additional, Moshin, V., additional, Croitor, M., additional, Hotineanu, A., additional, Ciorap, Z., additional, Rasohin, E., additional, Aleyasin, A., additional, Agha Hosseini, M., additional, Mahdavi, A., additional, Safdarian, L., additional, Fallahi, P., additional, Mohajeri, M. R., additional, Abbasi, M., additional, Esfahani, F., additional, Elnashar, A., additional, Badawy, A., additional, Totongy, M., additional, Mohamed, H., additional, Mustafa, F., additional, Seidman, D. S., additional, Tadir, Y., additional, Goldchmit, C., additional, Gilboa, Y., additional, Siton, A., additional, Mashiach, R., additional, Rabinovici, J., additional, Yerushalmi, G. M., additional, Inoue, O., additional, Kuji, N., additional, Fukunaga, T., additional, Ogawa, S., additional, Sugawara, K., additional, Yamada, M., additional, Hamatani, T., additional, Hanabusa, H., additional, Yoshimura, Y., additional, Kato, S., additional, Casarini, L., additional, La Marca, A., additional, Lispi, M., additional, Longobardi, S., additional, Pignatti, E., additional, Simoni, M., additional, Halpern, G., additional, Braga, D. P. A. F., additional, Figueira, R. C. S., additional, Setti, A. S., additional, Iaconelli Jr., A., additional, Borges Jr., E., additional, Vingris, L., additional, Pasqualotto, F. F., additional, Collado-Fernandez, E., additional, Harris, S. E., additional, Cotterill, M., additional, Elder, K., additional, Picton, H. M., additional, Serra, V., additional, Garrido, N., additional, Casanova, C., additional, Lara, C., additional, Remohi, J., additional, Bellver, J., additional, Steiner, H. P., additional, Kim, C. H., additional, You, R. M., additional, Nah, H. Y., additional, Kang, H. J., additional, Kim, S., additional, Chae, H. D., additional, Kang, B. M., additional, Reig Viader, R., additional, Brieno Enriquez, M. A., additional, Toran, N., additional, Cabero, L., additional, Giulotto, E., additional, Garcia Caldes, M., additional, Ruiz-Herrera, A., additional, Brieno-Enriquez, M., additional, Reig-Viader, R., additional, Martinez, F., additional, Garcia-Caldes, M., additional, Velthut, A., additional, Zilmer, M., additional, Zilmer, K., additional, Haller T. Kaart, E., additional, Karro, H., additional, Salumets, A., additional, Bromfield, J. J., additional, Sheldon, I. M., additional, Rezacova, J., additional, Madar, J., additional, Cuchalova, L., additional, Fiserova, A., additional, Shao, R., additional, and Billig, H., additional
- Published
- 2011
- Full Text
- View/download PDF
10. Telomeric repeat-containing RNA and telomerase in human fetal oocytes
- Author
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Reig-Viader, R., primary, Brieno-Enriquez, M. A., additional, Khouriauli, L., additional, Toran, N., additional, Cabero, L., additional, Giulotto, E., additional, Garcia-Caldes, M., additional, and Ruiz-Herrera, A., additional
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- 2012
- Full Text
- View/download PDF
11. Gene expression is altered after bisphenol A exposure in human fetal oocytes in vitro
- Author
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Brieno-Enriquez, M. A., primary, Reig-Viader, R., additional, Cabero, L., additional, Toran, N., additional, Martinez, F., additional, Roig, I., additional, and Garcia Caldes, M., additional
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- 2011
- Full Text
- View/download PDF
12. Revisió i proposta del model assistencial del peu diabètic a Catalunya
- Author
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[Reig-Viader R] Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQUAS), Departament de Salut, Generalitat de Catalunya, Barcelona, Spain. [Espallargues-Carreras M] Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQUAS), Departament de Salut, Generalitat de Catalunya, Barcelona, Spain. Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Madrid, Spain and Departament de Salut
- Subjects
Diabetis - Complicacions ,Peus - Infeccions ,Assistència mèdica - Catalunya ,Catalonia ,Cataluña ,Administración de los Servicios de Salud::Manejo de Atención al Paciente::Atención Integral de Salud::Atención Primaria de Salud [ATENCIÓN DE SALUD] ,Health Services Administration::Patient Care Management::Comprehensive Health Care::Primary Health Care [HEALTH CARE] ,Endocrine System Diseases::Diabetes Mellitus::Diabetes Complications::Diabetic Angiopathies::Endocrine System Diseases::Diabetes Mellitus::Diabetes Complications::Diabetic Foot [DISEASES] ,Enfermedades del Sistema Endocrino::Diabetes Mellitus::Complicaciones de la Diabetes::Angiopatías Diabéticas::Enfermedades del Sistema Endocrino::Diabetes Mellitus::Complicaciones de la Diabetes::Pie Diabético [ENFERMEDADES] - Published
- 2021
13. Eficacia, efectividad, seguridad y eficiencia de la cirugía robótica con el sistema quirúrgico Da Vinci
- Author
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[Romero-Tamarit A, Reig-Viader R] Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQuAS), Departament de Salut, Generalitat de Catalunya, Barcelona, Spain. [Estrada-Sabadell MD] CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain. Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQuAS), Departament de Salut, Generalitat de Catalunya, Barcelona, Spain. [Espallargues-Carreras M] Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Madrid, Spain. Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQuAS), Departament de Salut, Generalitat de Catalunya, Barcelona, Spain and Departament de Salut
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Còlon - Càncer - Cirurgia endoscòpica ,Neoplasms::Neoplasms by Site::Urogenital Neoplasms::Genital Neoplasms, Male::Prostatic Neoplasms [DISEASES] ,Nutritional and Metabolic Diseases::Nutrition Disorders::Overnutrition::Obesity [DISEASES] ,terapéutica::tratamiento asistido por ordenador::cirugía asistida por ordenador::procedimientos quirúrgicos robotizados [TÉCNICAS Y EQUIPOS ANALÍTICOS, DIAGNÓSTICOS Y TERAPÉUTICOS] ,Pròstata - Càncer - Cirurgia endoscòpica ,Neoplasms::Neoplasms by Site::Digestive System Neoplasms::Gastrointestinal Neoplasms::Intestinal Neoplasms::Colorectal Neoplasms::Colonic Neoplasms [DISEASES] ,Robòtica en medicina ,Recte - Càncer - Cirurgia endoscòpica ,neoplasias::neoplasias por localización::neoplasias del sistema digestivo::neoplasias gastrointestinales::neoplasias intestinales::neoplasias colorrectales::neoplasias del recto [ENFERMEDADES] ,neoplasias::neoplasias por localización::neoplasias urogenitales::neoplasias de los genitales masculinos::neoplasias de la próstata [ENFERMEDADES] ,neoplasias::neoplasias por localización::neoplasias del sistema digestivo::neoplasias gastrointestinales::neoplasias intestinales::neoplasias colorrectales::neoplasias del colon [ENFERMEDADES] ,Obesitat - Cirurgia ,Neoplasms::Neoplasms by Site::Digestive System Neoplasms::Gastrointestinal Neoplasms::Intestinal Neoplasms::Colorectal Neoplasms::Rectal Neoplasms::Anus Neoplasms [DISEASES] ,enfermedades nutricionales y metabólicas::trastornos nutricionales::hipernutrición::obesidad [ENFERMEDADES] ,Therapeutics::Therapy, Computer-Assisted::Surgery, Computer-Assisted::Robotic Surgical Procedures [ANALYTICAL, DIAGNOSTIC AND THERAPEUTIC TECHNIQUES, AND EQUIPMENT] - Published
- 2021
14. Sistemas automáticos de almacenamiento y dispensación de medicamentos en los servicios de farmacia hospitalaria: seguridad, efectividad y eficiencia
- Author
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Giménez-García, Emmanuel, Reig-Viader, Rita, Espallargues-Carreras, Mireia, [Giménez E, Reig-Viader R] Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQuAS), Departament de Salut, Generalitat de Catalunya. Barcelona, Spain. [Espallargues M] Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQuAS), Departament de Salut, Generalitat de Catalunya. Barcelona, Spain. Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Madrid, Spain, and Departament de Salut
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vigilancia sanitaria de los servicios de salud::centros sanitarios::hospitales::unidades hospitalarias::servicios técnicos hospitalarios::servicio hospitalario de farmacia [VIGILANCIA SANITARIA] ,técnicas de investigación::tecnología farmacéutica::almacenamiento de medicamentos [TÉCNICAS Y EQUIPOS ANALÍTICOS, DIAGNÓSTICOS Y TERAPÉUTICOS] ,Investigative Techniques::Technology, Pharmaceutical::Drug Storage [ANALYTICAL, DIAGNOSTIC AND THERAPEUTIC TECHNIQUES, AND EQUIPMENT] ,Medicaments - Emmagatzematge ,Farmàcies d'hospital ,Health Surveillance of Health Services::Health Facilities::Hospitals::Hospital Units::Ancillary Services, Hospital::Pharmacy Service, Hospital [HEALTH SURVEILLANCE] - Abstract
Medicaments; Atenció farmacèutica; Farmàcia hospitalària Medicamentos; Atención farmacéutica; Farmacia hospitalaria Medications; Pharmaceutical care; Hospital pharmacy L'objectiu d'el document és avaluar la seguretat, eficàcia i efectivitat de les tecnologies d'emmagatzematge i dispensació de medicaments en els SFH per tal d'orientar els directius en la presa de decisions sobre les inversions hospitalàries. Secundàriament, conèixer la disponibilitat d'equipaments automàtics tipus carrusel i/o SAD en els hospitals de el Sistema Nacional de Salut. El objetivo del documento es evaluar la seguridad, eficacia y efectividad de las tecnologías de almacenamiento y dispensación de medicamentos en los SFH con el fin de orientar a los directivos en la toma de decisiones sobre las inversiones hospitalarias. Secundariamente, conocer la disponibilidad de equipamientos automáticos tipo carrusel y/o SAD en los hospitales del Sistema Nacional de Salud. The objective of the document is to evaluate the safety, efficacy, and effectiveness of HPS drug storage and dispensing technologies in order to guide executives in hospital investment decision-making. Secondly, to know the availability of carousels and/or ADS automatic equipment in the hospitals belonging to the National Health System.
- Published
- 2021
15. Eficacia, efectividad, seguridad y eficiencia de la cirugía robótica con el sistema quirúrgico Da Vinci
- Author
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Romero-Tamarit, Arantxa, Reig-Viader, Rita, Estrada-Sabadell, Maria D., Espallargues-Carreras, Mireia, [Romero-Tamarit A, Reig-Viader R] Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQuAS), Departament de Salut, Generalitat de Catalunya, Barcelona, Spain. [Estrada-Sabadell MD] CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain. Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQuAS), Departament de Salut, Generalitat de Catalunya, Barcelona, Spain. [Espallargues-Carreras M] Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Madrid, Spain. Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQuAS), Departament de Salut, Generalitat de Catalunya, Barcelona, Spain, and Departament de Salut
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Còlon - Càncer - Cirurgia endoscòpica ,Neoplasms::Neoplasms by Site::Urogenital Neoplasms::Genital Neoplasms, Male::Prostatic Neoplasms [DISEASES] ,Nutritional and Metabolic Diseases::Nutrition Disorders::Overnutrition::Obesity [DISEASES] ,terapéutica::tratamiento asistido por ordenador::cirugía asistida por ordenador::procedimientos quirúrgicos robotizados [TÉCNICAS Y EQUIPOS ANALÍTICOS, DIAGNÓSTICOS Y TERAPÉUTICOS] ,Pròstata - Càncer - Cirurgia endoscòpica ,Neoplasms::Neoplasms by Site::Digestive System Neoplasms::Gastrointestinal Neoplasms::Intestinal Neoplasms::Colorectal Neoplasms::Colonic Neoplasms [DISEASES] ,Robòtica en medicina ,Recte - Càncer - Cirurgia endoscòpica ,neoplasias::neoplasias por localización::neoplasias del sistema digestivo::neoplasias gastrointestinales::neoplasias intestinales::neoplasias colorrectales::neoplasias del recto [ENFERMEDADES] ,neoplasias::neoplasias por localización::neoplasias urogenitales::neoplasias de los genitales masculinos::neoplasias de la próstata [ENFERMEDADES] ,neoplasias::neoplasias por localización::neoplasias del sistema digestivo::neoplasias gastrointestinales::neoplasias intestinales::neoplasias colorrectales::neoplasias del colon [ENFERMEDADES] ,Obesitat - Cirurgia ,Neoplasms::Neoplasms by Site::Digestive System Neoplasms::Gastrointestinal Neoplasms::Intestinal Neoplasms::Colorectal Neoplasms::Rectal Neoplasms::Anus Neoplasms [DISEASES] ,enfermedades nutricionales y metabólicas::trastornos nutricionales::hipernutrición::obesidad [ENFERMEDADES] ,Therapeutics::Therapy, Computer-Assisted::Surgery, Computer-Assisted::Robotic Surgical Procedures [ANALYTICAL, DIAGNOSTIC AND THERAPEUTIC TECHNIQUES, AND EQUIPMENT] - Abstract
Cirurgia robòtica; Avaluació; Cirurgia bariàtrica; Cirurgia prostàtica; Cirurgia del càncer colorectal Cirugía robótica; Evaluación; Cirugía bariátrica; Cirugía prostática; Cirugía del cáncer colorrectal Robotic surgery; Evaluation; Bariatric surgery; Prostate surgery; Colorectal cancer surgery Los objetivos de este informe de ETS son evaluar la evidencia científica sobre los beneficios y riesgos de la cirugía robótica con el sistema quirúrgico Da Vinci en comparación con la cirugía no assistida por robot (laparotomía o laparoscopia); en particular, la cirugía robótica aplicada al tratamiento de la obesidad (cirugía bariátrica), cáncer prostático y cáncer colorrectal. El informe también analiza la situación de la cirugía robótica en España para las indicaciones referidas anteriormente y según los datos proporcionados por el registro poblacional del conjunto mínimo básico de datos de los hospitales de agudos (CMBD-HA) en el periodo 2010-2017. The objectives of this ETS report are to evaluate the scientific evidence on the benefits and risks of robotic surgery with the Da Vinci surgical system compared to non-robotic-assisted surgery (laparotomy or laparoscopy); in particular, robotic surgery applied to the treatment of obesity (bariatric surgery), prostate cancer and colorectal cancer. The report also analyzes the situation of robotic surgery in Spain for the aforementioned indications and according to the data provided by the population registry of the minimum basic data set of acute hospitals (CMBD-HA) in the period 2010-2017. Aquest informe té com a objectiu avaluar l’evidència científica sobre els beneficis i riscos de la cirurgia robòtica en comparació amb la cirurgia no assistida per robot (laparotomia o laparoscòpia), en la cirurgia bariàtrica, en cirurgia prostàtica i en cirurgia càncer colorectal. A més s’ha analitzat la situació de la cirurgia robòtica a Espanya per a les 3 indicacions segons les dades proporcionades pel registre poblacional del conjunt mínim bàsic de dades dels hospitals d’aguts (CMBD-HA) en el període 2010-2017.
- Published
- 2020
16. Revisió i proposta del model assistencial del peu diabètic a Catalunya
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Reig-Viader, Rita, Espallargues-Carreras, Mireia, [Reig-Viader R] Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQUAS), Departament de Salut, Generalitat de Catalunya, Barcelona, Spain. [Espallargues-Carreras M] Agència de Qualitat i Avaluació Sanitàries de Catalunya (AQUAS), Departament de Salut, Generalitat de Catalunya, Barcelona, Spain. Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC), Madrid, Spain, and Departament de Salut
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Diabetis - Complicacions ,Peus - Infeccions ,Assistència mèdica - Catalunya ,Catalonia ,enfermedades del sistema endocrino::diabetes mellitus::complicaciones de la diabetes::angiopatías diabéticas::enfermedades del sistema endocrino::diabetes mellitus::complicaciones de la diabetes::pie diabético [ENFERMEDADES] ,Cataluña ,Health Services Administration::Patient Care Management::Comprehensive Health Care::Primary Health Care [HEALTH CARE] ,Endocrine System Diseases::Diabetes Mellitus::Diabetes Complications::Diabetic Angiopathies::Endocrine System Diseases::Diabetes Mellitus::Diabetes Complications::Diabetic Foot [DISEASES] ,administración de los servicios de salud::gestión de la atención al paciente::atención integral de salud::atención primaria de la salud [ATENCIÓN DE SALUD] - Abstract
Model assistencial; Peu diabètic; Atenció primària Modelo asistencial; Pie diabético; Atención primaria Healthcare model; Diabetic foot; Primary care El peu diabètic és la causa més comú de complicacions i casos d’hospitalització entre els pacients amb diabetis, ja que un percentatge molt elevat d’aquesta població presenta almenys un factor de risc de desenvolupar aquesta patologia i s’estima que al voltant del 15% l’arribaran a patir. Per aquest motiu, l’objectiu d’aquest informe és, en base a l’evidència disponible, proposar un conjunt de mesures que, per les seves característiques, podrien ser implementades dins el SISCAT i contribuirien a millorar el funcionament i l’organització de l’atenció sanitària rebuda pels pacients amb diabetis.
- Published
- 2019
17. Sublayer- and cell-type-specific neurodegenerative transcriptional trajectories in hippocampal sclerosis.
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Cid E, Marquez-Galera A, Valero M, Gal B, Medeiros DC, Navarron CM, Ballesteros-Esteban L, Reig-Viader R, Morales AV, Fernandez-Lamo I, Gomez-Dominguez D, Sato M, Hayashi Y, Bayés À, Barco A, Lopez-Atalaya JP, and de la Prida LM
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- Animals, Humans, Mice, Epilepsy pathology, Hippocampus metabolism, Neurodegenerative Diseases physiopathology, Neurons pathology, Sclerosis genetics
- Abstract
Hippocampal sclerosis, the major neuropathological hallmark of temporal lobe epilepsy, is characterized by different patterns of neuronal loss. The mechanisms of cell-type-specific vulnerability and their progression and histopathological classification remain controversial. Using single-cell electrophysiology in vivo and immediate-early gene expression, we reveal that superficial CA1 pyramidal neurons are overactive in epileptic rodents. Bulk tissue and single-nucleus expression profiling disclose sublayer-specific transcriptomic signatures and robust microglial pro-inflammatory responses. Transcripts regulating neuronal processes such as voltage channels, synaptic signaling, and cell adhesion are deregulated differently by epilepsy across sublayers, whereas neurodegenerative signatures primarily involve superficial cells. Pseudotime analysis of gene expression in single nuclei and in situ validation reveal separated trajectories from health to epilepsy across cell types and identify a subset of superficial cells undergoing a later stage in neurodegeneration. Our findings indicate that sublayer- and cell-type-specific changes associated with selective CA1 neuronal damage contribute to progression of hippocampal sclerosis., Competing Interests: Declaration of interests The authors declare no competing interests., (Copyright © 2021 The Author(s). Published by Elsevier Inc. All rights reserved.)
- Published
- 2021
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18. SynGAP splice variants display heterogeneous spatio-temporal expression and subcellular distribution in the developing mammalian brain.
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Gou G, Roca-Fernandez A, Kilinc M, Serrano E, Reig-Viader R, Araki Y, Huganir RL, de Quintana-Schmidt C, Rumbaugh G, and Bayés À
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- Animals, Cerebral Cortex growth & development, Cerebral Cortex metabolism, Computer Simulation, Gene Expression Regulation, Developmental genetics, Hippocampus growth & development, Hippocampus metabolism, Humans, Isomerism, Mice, Mice, Inbred C57BL, Protein Isoforms biosynthesis, Protein Isoforms genetics, Proteomics, Subcellular Fractions metabolism, ras GTPase-Activating Proteins biosynthesis, Brain growth & development, ras GTPase-Activating Proteins genetics
- Abstract
The SynGAP protein is a major regulator of synapse biology and neural circuit function. Genetic variants linked to epilepsy and intellectual disability disrupt synaptic function and neural excitability. SynGAP has been involved in multiple signaling pathways and can regulate small GTPases with very different roles. Yet, the molecular bases behind this pleiotropy are poorly understood. We hypothesize that different SynGAP isoforms will mediate different sets of functions and that deciphering their spatio-temporal expression and subcellular localization will accelerate understanding their multiple functions. Using isoform-specific antibodies recognizing SynGAP in mouse and human samples we found distinctive developmental expression patterns for all SynGAP isoforms in five mouse brain areas. Particularly noticeable was the delayed expression of SynGAP-α1 isoforms, which directly bind to postsynaptic density-95, in cortex and hippocampus during the first 2 weeks of postnatal development. Suggesting that during this period other isoforms would have a more prominent role. Furthermore, we observed subcellular localization differences between isoforms, particularly throughout postnatal development. Consistent with previous reports, SynGAP was enriched in the postsynaptic density in the mature forebrain. However, SynGAP was predominantly found in non-synaptic locations in a period of early postnatal development highly sensitive to SynGAP levels. While, α1 isoforms were always found enriched in the postsynaptic density, α2 isoforms changed from a non-synaptic to a mostly postsynaptic density localization with age and β isoforms were always found enriched in non-synaptic locations. The differential expression and subcellular distribution of SynGAP isoforms may contribute to isoform-specific regulation of small GTPases, explaining SynGAP pleiotropy., (© 2020 The Authors. Journal of Neurochemistry published by John Wiley & Sons Ltd on behalf of International Society for Neurochemistry.)
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- 2020
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19. SynGO: An Evidence-Based, Expert-Curated Knowledge Base for the Synapse.
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Koopmans F, van Nierop P, Andres-Alonso M, Byrnes A, Cijsouw T, Coba MP, Cornelisse LN, Farrell RJ, Goldschmidt HL, Howrigan DP, Hussain NK, Imig C, de Jong APH, Jung H, Kohansalnodehi M, Kramarz B, Lipstein N, Lovering RC, MacGillavry H, Mariano V, Mi H, Ninov M, Osumi-Sutherland D, Pielot R, Smalla KH, Tang H, Tashman K, Toonen RFG, Verpelli C, Reig-Viader R, Watanabe K, van Weering J, Achsel T, Ashrafi G, Asi N, Brown TC, De Camilli P, Feuermann M, Foulger RE, Gaudet P, Joglekar A, Kanellopoulos A, Malenka R, Nicoll RA, Pulido C, de Juan-Sanz J, Sheng M, Südhof TC, Tilgner HU, Bagni C, Bayés À, Biederer T, Brose N, Chua JJE, Dieterich DC, Gundelfinger ED, Hoogenraad C, Huganir RL, Jahn R, Kaeser PS, Kim E, Kreutz MR, McPherson PS, Neale BM, O'Connor V, Posthuma D, Ryan TA, Sala C, Feng G, Hyman SE, Thomas PD, Smit AB, and Verhage M
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- Animals, Brain physiology, Databases, Genetic, Humans, Knowledge Bases, Synaptic Potentials physiology, Synaptosomes, Brain cytology, Gene Ontology, Proteomics, Software, Synapses physiology
- Abstract
Synapses are fundamental information-processing units of the brain, and synaptic dysregulation is central to many brain disorders ("synaptopathies"). However, systematic annotation of synaptic genes and ontology of synaptic processes are currently lacking. We established SynGO, an interactive knowledge base that accumulates available research about synapse biology using Gene Ontology (GO) annotations to novel ontology terms: 87 synaptic locations and 179 synaptic processes. SynGO annotations are exclusively based on published, expert-curated evidence. Using 2,922 annotations for 1,112 genes, we show that synaptic genes are exceptionally well conserved and less tolerant to mutations than other genes. Many SynGO terms are significantly overrepresented among gene variations associated with intelligence, educational attainment, ADHD, autism, and bipolar disorder and among de novo variants associated with neurodevelopmental disorders, including schizophrenia. SynGO is a public, universal reference for synapse research and an online analysis platform for interpretation of large-scale -omics data (https://syngoportal.org and http://geneontology.org)., (Copyright © 2019 Elsevier Inc. All rights reserved.)
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- 2019
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20. Metazoan evolution of glutamate receptors reveals unreported phylogenetic groups and divergent lineage-specific events.
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Ramos-Vicente D, Ji J, Gratacòs-Batlle E, Gou G, Reig-Viader R, Luís J, Burguera D, Navas-Perez E, García-Fernández J, Fuentes-Prior P, Escriva H, Roher N, Soto D, and Bayés À
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- Amino Acid Sequence, Animals, Bayes Theorem, Binding Sites genetics, HEK293 Cells, Humans, Models, Molecular, Phylogeny, Protein Domains, Receptors, Ionotropic Glutamate chemistry, Receptors, Ionotropic Glutamate classification, Receptors, Metabotropic Glutamate chemistry, Receptors, Metabotropic Glutamate classification, Sequence Homology, Amino Acid, Evolution, Molecular, Genetic Variation, Receptors, Ionotropic Glutamate genetics, Receptors, Metabotropic Glutamate genetics
- Abstract
Glutamate receptors are divided in two unrelated families: ionotropic (iGluR), driving synaptic transmission, and metabotropic (mGluR), which modulate synaptic strength. The present classification of GluRs is based on vertebrate proteins and has remained unchanged for over two decades. Here we report an exhaustive phylogenetic study of GluRs in metazoans. Importantly, we demonstrate that GluRs have followed different evolutionary histories in separated animal lineages. Our analysis reveals that the present organization of iGluRs into six classes does not capture the full complexity of their evolution. Instead, we propose an organization into four subfamilies and ten classes, four of which have never been previously described. Furthermore, we report a sister class to mGluR classes I-III, class IV. We show that many unreported proteins are expressed in the nervous system, and that new Epsilon receptors form functional ligand-gated ion channels. We propose an updated classification of glutamate receptors that includes our findings., Competing Interests: DR, JJ, EG, GG, RR, JL, DB, EN, JG, PF, HE, NR, DS, ÀB No competing interests declared, (© 2018, Ramos-Vicente et al.)
- Published
- 2018
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21. Synaptic proteomics as a means to identify the molecular basis of mental illness: Are we getting there?
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Reig-Viader R, Sindreu C, and Bayés À
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- Animals, Humans, Meta-Analysis as Topic, Synapses pathology, Mental Disorders genetics, Mental Disorders metabolism, Mental Disorders pathology, Proteomics, Synapses metabolism
- Abstract
Synapses are centrally involved in many brain disorders, particularly in psychiatric and neurodevelopmental ones. However, our current understanding of the proteomic alterations affecting synaptic performance in the majority of mental illnesses is limited. As a result, novel pharmacotherapies with improved neurological efficacy have been scarce over the past decades. The main goal of synaptic proteomics in the context of mental illnesses is to identify dysregulated molecular mechanisms underlying these conditions. Here we reviewed and performed a meta-analysis of previous neuroproteomic research to identify proteins that may be consistently dysregulated in one or several mental disorders. Notably, we found very few proteins reproducibly altered among independent experiments for any given condition or between conditions, indicating that we are still far from identifying key pathophysiological mechanisms of mental illness. We suggest that future research in the field will require higher levels of standardization and larger-scale experiments to address the challenge posed by biological and methodological variability. We strongly believe that more resources should be placed in this field as the need to identify the molecular roots of mental illnesses is highly pressing., (Copyright © 2017 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2018
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22. Evolution of complexity in the zebrafish synapse proteome.
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Bayés À, Collins MO, Reig-Viader R, Gou G, Goulding D, Izquierdo A, Choudhary JS, Emes RD, and Grant SG
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- Animals, Brain ultrastructure, Female, Gene Duplication, Genome, Male, Mice, Microscopy, Electron, Transmission, Models, Biological, Nerve Tissue Proteins genetics, Post-Synaptic Density metabolism, Proteome genetics, Species Specificity, Synapses ultrastructure, Synaptosomes metabolism, Zebrafish, Zebrafish Proteins genetics, Brain metabolism, Nerve Tissue Proteins metabolism, Proteome metabolism, Proteome ultrastructure, Synapses metabolism, Zebrafish Proteins metabolism
- Abstract
The proteome of human brain synapses is highly complex and is mutated in over 130 diseases. This complexity arose from two whole-genome duplications early in the vertebrate lineage. Zebrafish are used in modelling human diseases; however, its synapse proteome is uncharacterized, and whether the teleost-specific genome duplication (TSGD) influenced complexity is unknown. We report the characterization of the proteomes and ultrastructure of central synapses in zebrafish and analyse the importance of the TSGD. While the TSGD increases overall synapse proteome complexity, the postsynaptic density (PSD) proteome of zebrafish has lower complexity than mammals. A highly conserved set of ∼1,000 proteins is shared across vertebrates. PSD ultrastructural features are also conserved. Lineage-specific proteome differences indicate that vertebrate species evolved distinct synapse types and functions. The data sets are a resource for a wide range of studies and have important implications for the use of zebrafish in modelling human synaptic diseases.
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- 2017
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23. Telomere homeostasis in mammalian germ cells: a review.
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Reig-Viader R, Garcia-Caldés M, and Ruiz-Herrera A
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- Animals, Germ Cells cytology, Homeostasis, Humans, Mammals metabolism, Telomerase genetics, Telomerase metabolism, Telomere metabolism, Germ Cells metabolism, Mammals genetics, Telomere genetics
- Abstract
Telomeres protect against genome instability and participate in chromosomal movements during gametogenesis, especially in meiosis. Thus, maintaining telomere structure and telomeric length is essential to both cell integrity and the production of germ cells. As a result, alteration of telomere homeostasis in the germ line may result in the generation of aneuploid gametes or gametogenesis disruption, triggering fertility problems. In this work, we provide an overview on fundamental aspects of the literature regarding the organization of telomeres in mammalian germ cells, paying special attention to telomere structure and function, as well as the maintenance of telomeric length during gametogenesis. Moreover, we discuss the different roles recently described for telomerase and TERRA in maintaining telomere functionality. Finally, we review how new findings in the field of reproductive biology underscore the role of telomere homeostasis as a potential biomarker for infertility. Overall, we anticipate that the study of telomere stability and equilibrium will contribute to improve diagnoses of patients; assess the risk of infertility in the offspring; and in turn, find new treatments.
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- 2016
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24. Telomere homeostasis is compromised in spermatocytes from patients with idiopathic infertility.
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Reig-Viader R, Capilla L, Vila-Cejudo M, Garcia F, Anguita B, Garcia-Caldés M, and Ruiz-Herrera A
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- Case-Control Studies, Cell Nucleus genetics, Cell Nucleus metabolism, DNA-Binding Proteins metabolism, HeLa Cells, Humans, Male, Recombination, Genetic, Telomerase metabolism, Telomere metabolism, Transcription Factors metabolism, Infertility, Male genetics, Spermatocytes metabolism, Telomere Homeostasis
- Abstract
Objective: To study whether the telomere structure of germ cells from idiopathic infertile men is altered and if this impairment is influenced by meiotic recombination and telomere length., Design: We performed a detailed analysis of both telomeric repeat-containing RNA (TERRA) and telomerase distribution in testis cell spreads by combining immunofluorescence and RNA fluorescent in situ hybridization. In addition we analyzed meiotic recombination between homologous chromosomes by immunofluorescence and telomere length by quantitative fluorescent in situ hybridization., Setting: University., Patient(s): Men consulting for fertility problems., Intervention(s): Unilateral testicular biopsies., Main Outcome Measure(s): We observed that TERRA levels and its nuclear distribution were compromised in infertile patients. In addition, the presence of the protein component of telomerase at telomeres decreased in the affected patients. However, neither telomerase-TERRA association nor telomere length was altered in spermatocytes I of infertile samples compared with control individuals. In addition, we observed that meiotic recombination was reduced in infertile individuals., Result(s): Telomere homeostasis is impaired in infertile patients, and this was translated into a decrease in TERRA levels together with an alteration of the TERRA-protein component of telomerase telomeric association in primary spermatocytes., Conclusion(s): This study demonstrates for the first time that telomere structure and homeostasis in germ cells is compromised in infertile individuals. In the light of our results we propose that the analysis of telomeric structure (i.e., TERRA levels and telomere association with TERRA and telomerase) would provide new tools for our understanding of the origin of human infertility., (Copyright © 2014 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.)
- Published
- 2014
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25. Telomeric repeat-containing RNA (TERRA) and telomerase are components of telomeres during mammalian gametogenesis.
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Reig-Viader R, Vila-Cejudo M, Vitelli V, Buscà R, Sabaté M, Giulotto E, Caldés MG, and Ruiz-Herrera A
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- Animals, Female, Flow Cytometry, HeLa Cells, Humans, In Situ Hybridization, Fluorescence, Male, Mice, Inbred C57BL, Microscopy, Fluorescence, RNA chemistry, RNA genetics, RNA, Untranslated genetics, Real-Time Polymerase Chain Reaction, Telomerase genetics, Telomere enzymology, Telomere genetics, Gametogenesis genetics, Gene Expression Regulation, Developmental physiology, Meiosis physiology, RNA, Untranslated metabolism, Telomerase metabolism, Telomere metabolism
- Abstract
Telomeres are ribonucleoprotein structures at the end of chromosomes composed of telomeric DNA, specific-binding proteins, and noncoding RNA (TERRA). Despite their importance in preventing chromosome instability, little is known about the cross talk between these three elements during the formation of the germ line. Here, we provide evidence that both TERRA and the telomerase enzymatic subunit (TERT) are components of telomeres in mammalian germ cells. We found that TERRA colocalizes with telomeres during mammalian meiosis and that its expression progressively increases during spermatogenesis until the beginning of spermiogenesis. While both TERRA levels and distribution would be regulated in a gender-specific manner, telomere-TERT colocalization appears to be regulated based on species-specific characteristics of the telomeric structure. Moreover, we found that TERT localization at telomeres is maintained throughout spermatogenesis as a structural component without affecting telomere elongation. Our results represent the first evidence of colocalization between telomerase and telomeres during mammalian gametogenesis., (© 2014 by the Society for the Study of Reproduction, Inc.)
- Published
- 2014
- Full Text
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26. Telomeric repeat-containing RNA and telomerase in human fetal oocytes.
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Reig-Viader R, Brieño-Enríquez MA, Khoriauli L, Toran N, Cabero L, Giulotto E, Garcia-Caldés M, and Ruiz-Herrera A
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- Cells, Cultured, Female, Fetus enzymology, HeLa Cells, Humans, Fetus cytology, Oocytes enzymology, RNA metabolism, Telomerase metabolism
- Abstract
Study Question: What is the distribution of telomeric repeat-containing RNA (TERRA) and of telomerase in human fetal oocytes?, Summary Answer: TERRA forms discrete foci at telomeres of human fetal oocytes and it co-localizes with both the shelterin component telomeric repeat-binding factor 2 (TRF2) and the catalytic subunit of human telomerase at the telomeres of meiotic chromosomes., What Is Known Already: TERRA is a structural element of the telomeric chromatin that has been described in somatic cells of many different eukaryote species. The telomerase enzyme is inactive in adult somatic cells but is active in germ cells, stem cells and in the majority of tumors; however, its distribution in oocytes is still unknown., Study Design, Size, Duration: For this study, ovarian samples from four euploid fetuses of 22 gestational weeks were used. These samples were obtained with the consent of the parents and of the Ethics Committee of Hospital de la Vall d'Hebron., Participants/materials, Setting, Methods: We analyzed the distribution of TERRA and telomerase in cells derived from human fetal ovaries. The co-localization of TERRA, telomerase and telomeres was performed by optimizing a combination of immunofluorescence (IF) and RNA-fluorescent in situ hybridization (RNA-FISH) techniques. The synaptonemal complex protein 3 (SYCP3), TRF2 and protein component of telomerase [telomerase reverse transcriptase (TERT)] were detected by IF, whereas TERRA was revealed by RNA-FISH using a (CCCTAA)(3) oligonucleotide. SYCP3 signals allowed us to identify oocytes that had entered meiosis and classify them into the different stages of prophase I, whereas TRF2 indicated the telomeric regions of chromosomes., Main Results and the Role of Chance: We show for the first time the presence of TERRA and the intracellular distribution of telomerase in human fetal ovarian cells. TERRA is present, forming discrete foci, in 75% of the ovarian tissue cells and most of TERRA molecules (≈ 83%) are at telomeres (TRF2 co-localization). TERRA levels are higher in oocytes than in ovarian tissue cells (P = 0.00), and do not change along the progression of the prophase I stage (P = 0.37). TERRA is present on ≈ 23% of the telomeres in all cell types derived from human fetal ovaries. Moreover, ≈ 22% of TERRA foci co-localize with the protein component of telomerase (TERT)., Limitations, Reasons for Caution: We present a descriptive/qualitative study of TERRA in human fetal ovarian tissue. Given the difficult access and manipulation of fetal samples, the number of fetal ovaries used in this study was limited., Wider Implications of the Findings: This is the first report on TERRA expression in oocytes from human fetal ovaries. The presence of TERRA at the telomeres of oocytes from the leptotene to pachytene stages and its co-localization with the telomerase protein component suggests that this RNA might participate in the maintenance of the telomere structure, at least through the processes that take place during the female meiotic prophase I. Since telomeres in oocytes have been mainly studied regarding the bouquet structure, our results introduce a new viewpoint of the telomeric structure during meiosis.
- Published
- 2013
- Full Text
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